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Extracellular polymeric substances in activated sludge were extracted by magnetic stir and H-type cation resin exchange, and the content of protein, polyose and nucleic acid were the evaluating indexes.

采用磁力搅拌—阳离子交换树脂法提取了活性污泥中的胞外聚合物。

This proof of principle demonstrates that the motion of a processive nucleic acid enzyme may be used to extract sequence information directly from DNA.

这个原理的证明表明一种进行性核酸酶可能被用来直接从DNA中提取序列信息。

Two major kinds of nucleic acids are found in living things: deoxyribonucleic acid or DNA and ribonucleic acid or RNA.

生物中存在着两大类核酸：脱氧核糖酸和核糖核酸。

Contek's gold cracked-cell pollen contains the nucleic acid DNA, RNA, and superoxide dismutase SOD, rutaceae, inositol and other high-unit enzymes more than 18 kinds.

康达黄金破壁花粉中含核酸DNA、RNA、超氧化物歧化酶SOD、芸香素、肌醇等高单位酵素18种以上。

As compared with the tissue of young leaf, the contents of RNA, DNA and total nucleic acid in freshly isolated protoplasts from sugarcane Saccharum officinarum L.

与幼叶组织相比，酶法新鲜分离的甘蔗和烟草幼叶原生质体内的RNA、DNA及总核酸含量均降低。其原因可能是刚游离的原生质体内酸性和碱性RNA酶与DNA酶等活性提高所致。

The HPV DNA related sequences, the expression of HPV capside antigen and relationship between the ultrastructural feature of lesion and diverse types of HPV infection in 35 cases of the cervical pr61iferative lesions(cervical condyloma, cervical cancer)were analyzed on the levels of cell,subcell and molecule by using nucleic acid hybridization, immunohistochemical method and electron microscopic technique.

本研究分别用核酸杂交、免疫组织化学和电子显微镜术等方法从细胞、亚细胞和分子水平上比较分析了35例子宫颈增殖性病变中人乳头瘤病毒DNA相关序列，人乳头瘤病毒衣壳抗原的表达以及病变超微结构变化特征与不同型别人乳头瘤病毒感染之间的关系。

After exposure to 100 mg/L chlorine dioxide, ATP, Ca^＋＋ ion and K^＋ ion in the bacterial thalli leaked out obviously, but injury to nucleic acid was not significant.

结论核酸并不是二氧化氯杀菌时的靶位点，胞内物质的渗漏与细菌致死的联系并不十分明显，二氧化氯的杀菌机理可能在于对细胞质的凝集作用上。

Methods Vascular specimens from 41 patients with thromboangiitis obliterans and 14 normal controls were analyzed by PCR. The nucleic acid sequence of enhancer located in the upstream of immediate early gene of cytomegalovirus was used as target region for detection of cytomegalovirus DNA.

方法以人巨细胞病毒即刻早期基因上游的增强子为扩增区段，用PCR技术分析了41例血栓闭塞性脉管炎病变血管壁中和14例正常血管壁中人巨细胞病毒的感染情况。

Structural comparison shows that this loop selectively competes with the unmethylated strand of the DNA duplex for binding to FTO, suggesting that it has an important role in FTO selection against double-stranded nucleic acids.

结构比较表明，该循环选择性地与DNA双链的结合FTO导电甲基化链竞争，表明它具有在FTO导电选择对双链核酸的重要作用。

Other methods such as Biolog GN analysis,phospholipids fatty acids analysis and nucleic acid-based analysis can be used to study and characterize soil microbes which currently cannot be cultured,a...

使用Biolog分析、磷脂脂肪酸分析和核酸分析等方法，可研究和表征那些现在还不能够被培养的土壤微生物，从而获取关于土壤微生物群落多样性的更多和更完整的信息。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。